I-Graphitized Petroleum Coke (GPC) sisixhobo esibalulekileyo kwishishini le-metallurgical, esisetyenziswa kakhulu njenge-carbon raiser (recarburizer) ekwenzeni intsimbi kunye neenkqubo zokuphosa. Yenziwa nge-graphitization yobushushu obuphezulu ye-petroleum coke kwi-2,500-3,500°C, ebonakaliswa ngumxholo wayo wekhabhoni ozinzileyo ophezulu, i-sulfur ephantsi, kunye namanqanaba aphantsi okungcola. I-GPC yaziwa ngesantya sayo esiphezulu sokufunxa, ukusebenza okuzinzileyo, kunye nokusebenza kakuhle ekunciphiseni izinto ezinobungozi ezifana ne-sulfur kunye ne-nitrogen kwisinyithi esinyibilikisiweyo. Oku kuyenza ibe yinto efanelekileyo yokuvelisa intsimbi esemgangathweni ophezulu, isinyithi esityhidiweyo, kunye nee-alloys.
